Application: plasmashell (5.5.5)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-31-generic x86_64
Distribution: Ubuntu 16.04.1 LTS

-- Information about the crash:
Panel crashed while removin several "Notes" Widgets in a row.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f1996af18c0 (LWP 3811))]

Thread 17 (Thread 0x7f1753def700 (LWP 25609)):
#0  0x00007f19911fb9cd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f198dfd8740 in g_wakeup_acknowledge (__nbytes=16, __buf=0x7f1753deeae0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  0x00007f198dfd8740 in g_wakeup_acknowledge (wakeup=0x7f174c003230) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gwakeup.c:210
#3  0x00007f198df94e84 in g_main_context_check (context=context@entry=0x7f174c1df7f0, max_priority=2147483647, fds=fds@entry=0x7f174c0019e0, n_fds=n_fds@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3632
#4  0x00007f198df95340 in g_main_context_iterate (context=context@entry=0x7f174c1df7f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3837
#5  0x00007f198df954ac in g_main_context_iteration (context=0x7f174c1df7f0, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#6  0x00007f1991b2ca9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f174c08cf80, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#7  0x00007f1991ad3dea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f1753deece0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00007f19918f08a4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#9  0x00007f19941983c5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f19918f584e in QThreadPrivate::start(void*) (arg=0x769d460) at thread/qthread_unix.cpp:331
#11 0x00007f19909e26fa in start_thread (arg=0x7f1753def700) at pthread_create.c:333
#12 0x00007f199120bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7f18b2ffd700 (LWP 5892)):
#0  0x00007f19909e83a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f19918f6aeb in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x5d5dbc0) at thread/qwaitcondition_unix.cpp:136
#2  0x00007f19918f6aeb in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x601a6b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f18da23c2bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f18da2404e8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f18da240542 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f18da240542 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007f18da240542 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#12 0x00007f18da240542 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#13 0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#14 0x00007f18da240542 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#15 0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#16 0x00007f18da240542 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#17 0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#18 0x00007f18da240542 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#19 0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#20 0x00007f18da240542 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#21 0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#22 0x00007f18da240542 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#23 0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#24 0x00007f18da23e353 in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#25 0x00007f19918f584e in QThreadPrivate::start(void*) (arg=0x7f189c002d90) at thread/qthread_unix.cpp:331
#26 0x00007f19909e26fa in start_thread (arg=0x7f18b2ffd700) at pthread_create.c:333
#27 0x00007f199120bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7f18b37fe700 (LWP 5891)):
#0  0x00007f19909e83a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f19918f6aeb in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x5d5dbc0) at thread/qwaitcondition_unix.cpp:136
#2  0x00007f19918f6aeb in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x601a6b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f18da23c2bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f18da2404e8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f18da240542 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f18da23e353 in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f19918f584e in QThreadPrivate::start(void*) (arg=0x7f18a4002f90) at thread/qthread_unix.cpp:331
#10 0x00007f19909e26fa in start_thread (arg=0x7f18b37fe700) at pthread_create.c:333
#11 0x00007f199120bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7f18b3fff700 (LWP 5890)):
#0  0x00007f19909e83a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f19918f6aeb in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x5d5dbc0) at thread/qwaitcondition_unix.cpp:136
#2  0x00007f19918f6aeb in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x601a6b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f18da23c2bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f18da2404e8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f18da240542 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f18da23e353 in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f19918f584e in QThreadPrivate::start(void*) (arg=0x7f18ac003190) at thread/qthread_unix.cpp:331
#10 0x00007f19909e26fa in start_thread (arg=0x7f18b3fff700) at pthread_create.c:333
#11 0x00007f199120bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7f18b89d6700 (LWP 5889)):
#0  0x00007f19909e83a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f19918f6aeb in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x5d5dbc0) at thread/qwaitcondition_unix.cpp:136
#2  0x00007f19918f6aeb in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x601a6b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f18da23c2bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f18da2404e8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f18da240542 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f18da23e353 in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f19918f584e in QThreadPrivate::start(void*) (arg=0x6132f70) at thread/qthread_unix.cpp:331
#10 0x00007f19909e26fa in start_thread (arg=0x7f18b89d6700) at pthread_create.c:333
#11 0x00007f199120bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7f18b91d7700 (LWP 5888)):
#0  0x00007f19909e83a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f19918f6aeb in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x5d5dbc0) at thread/qwaitcondition_unix.cpp:136
#2  0x00007f19918f6aeb in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x601a6b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f18da23c2bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f18da2404e8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f18da240542 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f18da23e353 in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f19918f584e in QThreadPrivate::start(void*) (arg=0x601c7f0) at thread/qthread_unix.cpp:331
#10 0x00007f19909e26fa in start_thread (arg=0x7f18b91d7700) at pthread_create.c:333
#11 0x00007f199120bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f18b11d7700 (LWP 5887)):
#0  0x00007f19909e83a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f19918f6aeb in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x5d5dbc0) at thread/qwaitcondition_unix.cpp:136
#2  0x00007f19918f6aeb in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x601a6b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f18da23c2bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f18da2404e8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f18da240542 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f18da240542 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007f18da240542 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#12 0x00007f18da23e353 in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#13 0x00007f19918f584e in QThreadPrivate::start(void*) (arg=0x7f18bc003100) at thread/qthread_unix.cpp:331
#14 0x00007f19909e26fa in start_thread (arg=0x7f18b11d7700) at pthread_create.c:333
#15 0x00007f199120bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f18b99d8700 (LWP 5886)):
#0  0x00007f19909e83a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f19918f6aeb in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x5d5dbc0) at thread/qwaitcondition_unix.cpp:136
#2  0x00007f19918f6aeb in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x601a6b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f18da23c2bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f18da2404e8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f18da240542 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f18da23e353 in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f19918f584e in QThreadPrivate::start(void*) (arg=0x601c920) at thread/qthread_unix.cpp:331
#10 0x00007f19909e26fa in start_thread (arg=0x7f18b99d8700) at pthread_create.c:333
#11 0x00007f199120bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f18c2332700 (LWP 5885)):
#0  0x00007f19909e83a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f19918f6aeb in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x5d5dbc0) at thread/qwaitcondition_unix.cpp:136
#2  0x00007f19918f6aeb in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x601a6b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f18da23c2bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f18da2404e8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f18da240542 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f18da240542 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007f18da240542 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007f18da23b46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#12 0x00007f18da23e353 in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#13 0x00007f19918f584e in QThreadPrivate::start(void*) (arg=0x6132f20) at thread/qthread_unix.cpp:331
#14 0x00007f19909e26fa in start_thread (arg=0x7f18c2332700) at pthread_create.c:333
#15 0x00007f199120bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f18cf8c0700 (LWP 4081)):
#0  0x00007f19911ffe8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f198df9539c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f18c80048c0, timeout=<optimized out>, context=0x7f18c8000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:4135
#2  0x00007f198df9539c in g_main_context_iterate (context=context@entry=0x7f18c8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3835
#3  0x00007f198df954ac in g_main_context_iteration (context=0x7f18c8000990, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#4  0x00007f1991b2ca9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f18c80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f1991ad3dea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f18cf8bfcc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f19918f08a4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f18d1d9f7d7 in KCupsConnection::run() () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#8  0x00007f19918f584e in QThreadPrivate::start(void*) (arg=0x46a3d20) at thread/qthread_unix.cpp:331
#9  0x00007f19909e26fa in start_thread (arg=0x7f18cf8c0700) at pthread_create.c:333
#10 0x00007f199120bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f1965eb4700 (LWP 3891)):
#0  0x00007f198dfd874b in g_wakeup_acknowledge (wakeup=0x7f1960002780) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gwakeup.c:211
#1  0x00007f198df94e84 in g_main_context_check (context=context@entry=0x7f18dc000990, max_priority=2147483647, fds=fds@entry=0x7f18dc003120, n_fds=n_fds@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3632
#2  0x00007f198df95340 in g_main_context_iterate (context=context@entry=0x7f18dc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3837
#3  0x00007f198df954ac in g_main_context_iteration (context=0x7f18dc000990, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#4  0x00007f1991b2ca9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f18dc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f1991ad3dea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f1965eb3c90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f19918f08a4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f1994b1eed6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f19918f584e in QThreadPrivate::start(void*) (arg=0x2778d80) at thread/qthread_unix.cpp:331
#9  0x00007f19909e26fa in start_thread (arg=0x7f1965eb4700) at pthread_create.c:333
#10 0x00007f199120bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f196c8bb700 (LWP 3882)):
#0  0x00007f19909e83a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f199653dbd4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f199653dc19 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f19909e26fa in start_thread (arg=0x7f196c8bb700) at pthread_create.c:333
#4  0x00007f199120bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f196e1f7700 (LWP 3876)):
#0  0x00007f19911ffe8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f198df9539c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f1960003070, timeout=<optimized out>, context=0x7f1960000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:4135
#2  0x00007f198df9539c in g_main_context_iterate (context=context@entry=0x7f1960000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3835
#3  0x00007f198df954ac in g_main_context_iteration (context=0x7f1960000990, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#4  0x00007f1991b2ca9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f19600008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f1991ad3dea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f196e1f6ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f19918f08a4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f19941983c5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f19918f584e in QThreadPrivate::start(void*) (arg=0x2596ed0) at thread/qthread_unix.cpp:331
#9  0x00007f19909e26fa in start_thread (arg=0x7f196e1f7700) at pthread_create.c:333
#10 0x00007f199120bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f196ffcd700 (LWP 3861)):
#0  0x00007f19911ffe8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f198df9539c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f1968002e70, timeout=<optimized out>, context=0x7f1968000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:4135
#2  0x00007f198df9539c in g_main_context_iterate (context=context@entry=0x7f1968000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3835
#3  0x00007f198df954ac in g_main_context_iteration (context=0x7f1968000990, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#4  0x00007f1991b2ca9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f19680008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f1991ad3dea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f196ffccce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f19918f08a4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f19941983c5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f19918f584e in QThreadPrivate::start(void*) (arg=0x2446900) at thread/qthread_unix.cpp:331
#9  0x00007f19909e26fa in start_thread (arg=0x7f196ffcd700) at pthread_create.c:333
#10 0x00007f199120bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f197b5ef700 (LWP 3850)):
#0  0x00007f198dfd9ae4 in g_mutex_unlock (mutex=0x7f1974000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gthread-posix.c:1347
#1  0x00007f198df9524d in g_main_context_iterate (context=context@entry=0x7f1974000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3788
#2  0x00007f198df954ac in g_main_context_iteration (context=0x7f1974000990, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#3  0x00007f1991b2ca9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f19740008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f1991ad3dea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f197b5eece0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f19918f08a4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f19941983c5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f19918f584e in QThreadPrivate::start(void*) (arg=0x2179310) at thread/qthread_unix.cpp:331
#8  0x00007f19909e26fa in start_thread (arg=0x7f197b5ef700) at pthread_create.c:333
#9  0x00007f199120bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f1981e13700 (LWP 3815)):
#0  0x00007f19911ffe8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f19952c4c62 in _xcb_conn_wait (__timeout=-1, __nfds=1, __fds=0x7f1981e12c00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  0x00007f19952c4c62 in _xcb_conn_wait (c=c@entry=0x20a5160, cond=cond@entry=0x20a51a0, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:459
#3  0x00007f19952c68d7 in xcb_wait_for_event (c=0x20a5160) at ../../src/xcb_in.c:693
#4  0x00007f1983f61629 in QXcbEventReader::run() (this=0x20af7f0) at qxcbconnection.cpp:1253
#5  0x00007f19918f584e in QThreadPrivate::start(void*) (arg=0x20af7f0) at thread/qthread_unix.cpp:331
#6  0x00007f19909e26fa in start_thread (arg=0x7f1981e13700) at pthread_create.c:333
#7  0x00007f199120bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f1996af18c0 (LWP 3811)):
[KCrash Handler]
#6  0x00007f1994ba4594 in QQuickItem::parentItem() const () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f196e2082b8 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/scriptengines/plasma_appletscript_declarative.so
#8  0x00007f1991b04e4f in QMetaObject::activate(QObject*, int, int, void**) (a=0x7ffd33d65170, r=0x5708790, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#9  0x00007f1991b04e4f in QMetaObject::activate(QObject*, int, int, void**) (sender=0x72d54e0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3698
#10 0x00007f199503bc82 in Plasma::Applet::destroyedChanged(bool) () at /usr/lib/x86_64-linux-gnu/libKF5Plasma.so.5
#11 0x00007f199504c46c in  () at /usr/lib/x86_64-linux-gnu/libKF5Plasma.so.5
#12 0x00007f199503d499 in  () at /usr/lib/x86_64-linux-gnu/libKF5Plasma.so.5
#13 0x00007f1991b04fca in QMetaObject::activate(QObject*, int, int, void**) (sender=sender@entry=0x76b75e0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x7ffd33d653b0) at kernel/qobject.cpp:3713
#14 0x00007f1991b057d7 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (sender=sender@entry=0x76b75e0, m=m@entry=0x7f1992adaf00 <QAction::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x7ffd33d653b0) at kernel/qobject.cpp:3578
#15 0x00007f19925cf412 in QAction::triggered(bool) (this=this@entry=0x76b75e0, _t1=false) at .moc/moc_qaction.cpp:365
#16 0x00007f19925d1898 in QAction::activate(QAction::ActionEvent) (this=this@entry=0x76b75e0, event=event@entry=QAction::Trigger) at kernel/qaction.cpp:1162
#17 0x00007f19925d1e1f in QAction::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (this=0x76b75e0) at kernel/qaction.h:177
#18 0x00007f19925d1e1f in QAction::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=_o@entry=0x76b75e0, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=5, _a=_a@entry=0x7ffd33d655a0) at .moc/moc_qaction.cpp:206
#19 0x00007f19925d2324 in QAction::qt_metacall(QMetaObject::Call, int, void**) (this=0x76b75e0, _c=QMetaObject::InvokeMetaMethod, _id=5, _a=0x7ffd33d655a0) at .moc/moc_qaction.cpp:323
#20 0x00007f1994156319 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#21 0x00007f19940dbf3e in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#22 0x00007f19940dce05 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#23 0x00007f19940dd6cd in QV4::QObjectMethod::callInternal(QV4::CallData*) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#24 0x00007f19940f40c3 in QV4::Runtime::callProperty(QV4::ExecutionEngine*, int, QV4::CallData*) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#25 0x00007f18c0018f43 in  ()
#26 0x00007f1991d25318 in (anonymous namespace)::Q_QGS_customTypes::innerFunction()::holder () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007ffd33d65ba0 in  ()
#28 0x0003000000000006 in  ()
#29 0x0001000000000000 in  ()
#30 0x00007f196e20d8c0 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/scriptengines/plasma_appletscript_declarative.so
#31 0x00007f1991d25318 in (anonymous namespace)::Q_QGS_customTypes::innerFunction()::holder () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f196d1f8220 in  ()
#33 0x00007f196d1f8228 in  ()
#34 0x00000000025aff60 in  ()
#35 0x00007f199409477a in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#36 0x00007f199417d7ff in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#37 0x00007f1994123cb6 in QQmlBoundSignalExpression::evaluate(void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#38 0x00007f1994124558 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#39 0x00007f1994160bae in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#40 0x00007f199410386c in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#41 0x00007f1991b048a0 in QMetaObject::activate(QObject*, int, int, void**) (sender=0x7b24100, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x7ffd33d67d20) at kernel/qobject.cpp:3599
#42 0x00007f19940fd9e1 in QQmlVMEMetaObject::metaCall(QMetaObject::Call, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#43 0x00007f19940fc4a7 in QQmlVMEMetaObject::metaCall(QMetaObject::Call, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#44 0x00007f19940fc4a7 in QQmlVMEMetaObject::metaCall(QMetaObject::Call, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#45 0x00007f1994156319 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#46 0x00007f19940dbf3e in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#47 0x00007f19940dce05 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#48 0x00007f19940dd6cd in QV4::QObjectMethod::callInternal(QV4::CallData*) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#49 0x00007f19940f40c3 in QV4::Runtime::callProperty(QV4::ExecutionEngine*, int, QV4::CallData*) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#50 0x00007f1964430aa5 in  ()
#51 0x0000000007b24100 in  ()
#52 0x00007f19940de9fe in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#53 0x00007ffd33d6a8b0 in  ()
#54 0x00007f175304d7f0 in  ()
#55 0x0000000000000000 in  ()

Reported using DrKonqi